12854798640 has 120 divisors (see below), whose sum is σ = 43553016000. Its totient is φ = 3397588992.

The previous prime is 12854798633. The next prime is 12854798641. The reversal of 12854798640 is 4689745821.

It is a happy number.

12854798640 is a `hidden beast` number, since 1 + 2 + 8 + 547 + 98 + 6 + 4 + 0 = 666.

12854798640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (12854798641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2361 + ... + 160359.

It is an arithmetic number, because the mean of its divisors is an integer number (362941800).

Almost surely, 2^12854798640 is an apocalyptic number.

12854798640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12854798640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21776508000).

12854798640 is an abundant number, since it is smaller than the sum of its proper divisors (30698217360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12854798640 is a wasteful number, since it uses less digits than its factorization.

12854798640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158131 (or 158122 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 12854798640 in words is "twelve billion, eight hundred fifty-four million, seven hundred ninety-eight thousand, six hundred forty".